58 results about "Physical reality" patented technology

Systems, devices, methods and computer-readable storage mediums storing instructions are provided that enable multi-user interaction with detailed virtual objects of a shared virtual space superimposed for all users identically on a shared physical space. Experiences that can be achieved by users of a multi-user group during such interaction are collectively called a multi-user virtual reality interaction environment experience. During the enabled interaction, users can collaborate and communicate simultaneously within the shared virtual space and the shared physical space. This results in both spaces being interrelated and intuitive to navigate and creates a virtual reality experience combined with physical reality, which is shared by all users. Interactions with the shared virtual space are performed using manually positioned and operated portable interactive devices with trackers, movement of which is tracked in the shared physical space and is used to control individual views of the detailed virtual objects of the shared virtual space.

The invention is an interactive wearable video game (1), in which one or more players interact with physical objects through physical actions / contact / physiological signals to control a video game. The apparatus includes a series of wireless electronic sensors (7 to 16) to be placed in the user's body / surrounding environment, detecting the user's input actions in real time—output result is visualized on a binocular see-through display glasses system (2). The invention allows for the players to move around by connecting with the physical space, and to use their full bodies to control the game, exercise and share interactions. It allows for the connection between both virtual and physical realities—mixed reality concept by augmenting the user's perceptions among the surrounding environment. Users can either communicate from maximum physical proximity through a Web connection. The invention is rechargeable by converting produced solar energy into electric energy.

Active RFID technologies are used to tag assets and people within buildings or open areas, such as parking lots or military bases; and to identify, preferably within a few meters, the real-time location (RTL) of the tag, i.e. to create a real-time location system, known as an RTLS. A novel and complex algorithm is provided that combines signal strength computations with factors that incorporate physical realities, such as walls and floors, to determine a tag's real-time location more accurately.

The invention discloses a method for achieving laser radar scene simulation on the basis of GPU programming. The method mainly overcomes the defect that in the prior art, the physical reality sense of laser radar effect simulation is poor, so that dynamic rendering imaging cannot be performed. The method includes the steps of importing a three-dimensional model into a program, obtaining the position and normal information of each peak, obtaining parameters required for calculating a BRDF by means of experiments or instrument measurement, saving material type labels, normal incidence reflectivity, rough factors and isotropic factors into DDS data texture, sampling the data texture in a fragment program, obtaining the normal incidence reflectivity, the rough factors and the isotropic factors of different positions, combining the positions and the normal information of all peaks of the three-dimensional model, calculating laser luminance values of the different positions in a scene in the laser receiver direction according to a reflection model of the BRDF, and quantizing the laser luminance values into 8-bit gray values for displaying. The method can achieve dynamic imaging, is strong in reality sense, and can be applied to laser guidance and target detection.

The invention discloses a multi-field coupling transient numerical method for hypersonic flow-heat transfer and structural response. The method comprises the following steps of: determining wall temperature and displacement boundary condition according to structure, performing data exchange at a fluid-solid coupling interface, and obtaining the current temperature and displacement boundary condition; simultaneously solving coupled solution format of each preset conservation equation to obtain the current heat flux and pressure; performing data exchange at the fluid-solid coupling interface to obtain the boundary condition of a solid region; according to the boundary condition of the solid region, solving out the wall temperature and structure displacement through a thermal mechanical unity coupling method; and executing the steps above repeatedly until meeting a preset stop condition. Using the method provided by the invention, multi-field coupling calculation where a hypersonic non-equilibrium flow solver and a structural thermal / mechanical unity coupling solver are coupled is realized, prediction on pneumatic thermodynamic environment and structural thermodynamic response of a hypersonic aircraft meets physical reality better, and calculation precision can be guaranteed.

The invention described herein provides a method and system for the detection and location of unauthorized or otherwise targeted network devices on a network. According to aspects of the invention, the method disclosed herein consists of gathering a logical mapping of the devices on a computer network (which can be faked, spoofed or easily hidden) by mining data from the routers and switches on the network, and matching the logical mapping of the devices to the physical reality of the network environment which can't be easily hidden or spoofed. Based on the physical information acquired about the devices on the network, it is possible to identify devices that are either unauthorized or are otherwise targeted.

The invention provides a guide wire simulation method facing cardiovascular interventional surgery emulation. The method comprises four steps that: an initialization stage is used for initializing each kind of basic physical information of a guide wire and the initial state of the guide wire and constructing a guide wire physical model; in a guide wire model physical emulation stage, a guide wire motion equation is solved according to external force and energy equations to obtain the displacement and state updating of the guide wire; in the guide wire and ambient environment interaction stage, the guide wire generates interaction with the ambient environment in the inserting process in a blood vessel, so the physical state of the guide wire is influenced; in a guide wire simulation optimization stage, the guide wire emulation is subjected to optimization treatment according to the state characteristics of the current guide wire. The guide wire simulation method has the advantages that the hidden method physical simulation emulation is carried out on the guide wire, in addition, the interaction with the ambient environment is also realized, the method is applied to the cardiovascular interventional surgery, and the characteristics that the stability is high, the real-time performance is good, the physical reality sense is high, and the high fidelity is realized are realized.

A system and a method that facilitates generating a model from a 3-dimensional (3D) object assembled from 2-dimensional (2D) content are described. A content aggregator can construct a 3D object from a collection of two or more 2D images each depicting a real entity in a physical real world, wherein the 3D object is constructed by combining the two or more 2D images based upon a respective image perspective. A 3D virtual environment can allow exploration of the 3D object. A model component can extrapolate a true 3D geometric model from the 3D object, wherein the true 3D geometric model is generated to include scaling in proportion to a size within the physical real world.

In one embodiment, a new device or service can be treated as an abstraction, allowing a model to be created which mimics operation of the device or service, but which does not physically exist. A communication system may then take physical assets that are distributed around a network, such as circuit packs with ports on them, and virtually plug them into a shelf that does not physically exist. A legacy system preferably continues to function as it always has and the abstraction mediates between the legacy operations support systems, the virtual machine and the physical reality. This then allows for the continued use of existing operation systems to manage new network architectures with services different from those originally contemplated by the legacy operations support systems.

Users play a role-playing video game which can in principle be of a variety of types but will generally involve the player controlling the actions of an avatar such as a duck. After finishing a number of tasks, levels, or the like, the avatar is given entrance to a virtual shopping mall. The avatar, which again may take the form of a mangy duck, traverses the premises of the mall, beholding the merchandise displayed within the various shops and food court, and chooses items over which to compete. The winner of such competitions wins the items which are delivered or picked up in actual physical reality.

The invention discloses a method of calculating interaction of a wave and an irregular structure object. The method is characterized in that the method comprises: simulating viscous wave fluid on thebasis of Reynolds time-averaged N-S equations, and utilizing a turbulence model to close the N-S equations to use the same as control equations of a calculation method; and adjusting pressure in an iterative manner through an SIMPLE algorithm to enable internal fluid units to meet a continuous equation and free surface units to meet free-surface dynamic-boundary conditions, and adjusting a velocity field at the same time. Compared with traditional methods of calculating interaction of the wave and the irregular structure object, the method of the invention is based on the N-S equations of considering fluid viscosity, adopts a rectangular grid to divide a calculation area, and has the advantage that a numerical result more accords with physical reality.

The invention relates to a lightning striking distance based on the shielding failure of the power transmission line of the electro-geometric mode and a determining method thereof, and belongs to the lightningproof technical field of high-voltage transmission lines. The lightning striking distance D sv (I, h, V) provided by the invention is described as follows: D sv (I, h, V) is equal to (-0.004I <2> added with 0.221) h <0.625> <e> <Bv>; wherein, I is lightning current, and the unit thereof is KA; h is the height of a horizontal lead; V is the voltage of the horizontal lead. The determining method of the lightning striking distance includes that the quadratic polynomial of each height of the horizontal lead can be estimated; and the equation of the lightning striking distance D (I, h) related to the height of the horizontal lead can be obtained; when the voltage of the horizontal lead is between minor 1MV and plus 1MV, and when the lightning current is within 200Ka, the correction factor of lightning striking distances under different voltages, kv is equal to e <Bv>, can be achieved by the analog simulation, and finally, the lightning striking distance D sv (I, h, V) can be obtained. The lighting striking distance determined by the method provided by the invention can well meet the physical reality and can reduce the jumping rate of the lightning striking of the power transmission line, thereby guaranteeing the safe operation of power transmission lines.

The invention discloses a method for improving the data processing of the absorption loss measurement of optical elements. The method comprises the steps of: continuously irradiating the surfaces of the optical elements with excitation beams which are focused through a lens, wherein the interior temperature of the optical elements rises up because of absorbing the energy of incident laser beams; establishing an accurate temperature model which can better reflect the physical reality of the optical elements; based on the accurate temperature model, obtaining an optimum temperature detection position different from that adopted by an international standard ISO11551 through carrying out numerical simulation on the temperature rise at different positions of the optical elements with a certain size and different thermal physical properties; adjusting a temperature sensor to the optimum temperature detection position to measure the temperature data on the surfaces of the optical elements; and obtaining the absorption loss values of samples by fitting the measured temperature data to a uniform temperature model adopted by the international standard ISO11551. Compared with a fixed temperature detection position adopted by the traditional international standard ISO11551, aiming at the sizes and thermal physical parameters of different optical elements to be measured, the method adopts the temperature sensor of which the position is adjustable to realize the purpose of more accurately measuring the absorption losses of the optical elements.

A real time physical reality immersive experience having gameification of actions taken in physical reality combines endurance events and gaming aspects to create a novel entertainment systems, methods, and apparatus, including Modular Efficiently Transformable Assembly Structures (METAS).

A method for assessing the aerodynamic ground effects on an aircraft. The method includes determining the variation of at least one aerodynamic coefficient of the aircraft as a function of the height for a range of heights extending from an aerodynamically infinite height to a zero height. In the method, (i) the range of heights is subdivided into at least two consecutive sets of heights; (ii) for one of the sets of heights, the variation of said aerodynamic coefficient is determined by wind tunnel tests using a model of the aircraft; and (iii) for the other of the sets of heights, the variation of said aerodynamic coefficient is determined by digital simulation reproducing by computation the physical reality of the air flow around said aircraft.

The invention provides a hemolysis experience predicting method and device based on energy dissipation. A hemolysis experience predicting model is established first based on energy dissipation, and hemolysis predicting is conducted according to the established model. The hemolysis experience predicting method includes the following steps of making a preparation for early-stage computational fluiddynamics (CFD) computation, calculating the average flow energy dissipation and turbulence energy dissipation, defining a hemolysis scalar, calculating source items of a hemolysis scalar equation, andcoupling with the CFD computation to iteratively obtain the hemolysis amount. The hemolysis experience predicting device comprises a CFD computation early-stage preparing module, an energy dissipation calculating module, a hemolysis source item calculating module and a hemolysis obtaining module. By means of the method and device, the quantitative relation of energy dissipation and blood damage is established to better conform to physical reality; the result is one or more magnitude orders lower than the calculation result obtained by means of Reynolds stress in the past, the hemolysis amountdefect in existing model overestimated turbulence is avoided, and hemolysis is quantitatively and qualitatively estimated.

The invention relates to a method for correcting atmospheric refraction when a radar measures the flight path of a space target. The method is mainly applied to radar precision identification, uses astandard track for identifying a target as a correction reference, and changes a ground vertical reference from an earth's core-to-radar position vector in a traditional method to an earth ellipsoid curvature center-to-radar position vector. Thus, the geocentric distance is replaced by curvature center distance and the earth's core intersection angle is replaced by the curvature center intersection angle so as to improve the refractive correction in the space target measurement. The method considers the non-spherical characteristic of the earth, makes the calculation of the refraction error closer to the physical reality, can be directly applied to the precision identification of the space target measurement radar, improves the error separation level of the precision radar, is used in thefields of space debris environment monitoring, in-orbit service and space situational awareness energy, and improves the space target measuring and tracking ability.

The invention discloses a rotor wing icing ice shape calculation method considering a flapping effect, a storage medium and a terminal, and belongs to the technical field of aerospace, and the method comprises the steps: firstly, calculating a three-dimensional ice shape of a blade without considering the flapping motion influence; and secondly, calculating icing stresses at different positions of the blade, judging whether the icing stresses at different positions of the blade are greater than an icing breaking strength threshold value or not, if so, updating the icing state of the current blade position to be non-icing, otherwise, not performing any treatment. According to the method, the breaking influence effect of the blade waving motion on the ice is fully considered, the breaking and falling judgment is performed on the ice at different positions of the blade in combination with the physical property parameters and the stress condition of the ice, the simulation precision of the ice shape of the rotor wing ice is greatly improved, and the physical reality of the blade ice is effectively restored.

The invention provides a spectrum unfolding method for a neutron energy spectrum with integral weight. An activation foil weight factor is introduced into an iterative process, and a new truncation condition and a morbid data culling method are used. Neutron energy spectrum unfolding is accurately completed under a condition consistent with the physical reality. The method is based on statistical theory to deduce that the judgment truncation condition has a theoretical basis and is more in line with the physical reality compared with error truncation and truncation of iteration number of times of other methods.

It is a common desire for users of spatial computer environments (both in VR and AR) to be able to navigate in space and manipulate objects in much the same way as they are used to in physical reality. However, due to the large degrees of freedom of this problem, existing solutions operate either by restricting the number of operations that can be performed, or by proposing overly complicated solutions. Cognitive Navigation and Manipulation introduces a context dependent solution for navigation and object translation / rotation in VR, allowing users to perform operations in an intuitive way, even with only a very simple input device at their disposal. The device is required to have no more than 3 buttons and 3 continuous input dimensions.

The present invention is a handheld artist's aid designed to allow a freehand artist to establish horizontal fidelity, proportionality, subject scale, subject placement and angular relationships of a three-dimensional subject that is to become a two-dimensional work. It incorporates a visual leveling device in addition to a series of reference grids imposed there on. It is not designed as a copying or reproduction tool, but rather as an artist's aid that allows the artist freedom of expression yet frames the work within the physical reality of the structure. It is designed with multiple sized grids such that its use, can be enabled within the arms length of any artist.

The invention provides a data-dependent physically-real restoration method of object deformation sequences. According to the method, with a key model of sparse sampling on a time axis being used as input, a whole deformation sequence of the model can be quickly generated. The method includes: subjecting the key model to modal analysis, using an obtained mode as module base to reduce dimensionality of a kinetic equation which describes object deformation, and decomposing mutually-coupled equations into multiple equations mutually independent; converting a continuous deformation problem of solving time into a problem of solving a minimum of time integration, and acquiring an analytical expression according to the Euler-Lagrange theorem; finally, solving a linear equation set to obtain a complete deformation sequence. The mode and data dependence obtained in the modal analysis process allow deformation of an input model to be well described and also allows data dimensionality to be greatly reduced; the results include analytical expressions, allowing real-time interaction; the results meet the kinetic equation of object deformation and are of physical reality.

A method for assessing the aerodynamic ground effects on an aircraft. The method includes determining the variation of at least one aerodynamic coefficient of the aircraft as a function of the height for a range of heights extending from an aerodynamically infinite height to a zero height. In the method, (i) the range of heights is subdivided into at least two consecutive sets of heights; (ii) for one of the sets of heights, the variation of said aerodynamic coefficient is determined by wind tunnel tests using a model of the aircraft; and (iii) for the other of the sets of heights, the variation of said aerodynamic coefficient is determined by digital simulation reproducing by computation the physical reality of the air flow around said aircraft.

The invention discloses a simulation method and a system for complex boundary micro-flow, comprising the following steps: 1) based on a lattice Boltzmann method, establishing a micro-scale flow modeland obtaining an initial distribution function; 2) obtaining a first distribution function after that interaction between the molecule and a second distribution function after the interaction betweenthe molecules and the boundary based on the initial distribution function; 3) obtaining the macroscopic parameters and the equilibrium distribution function require in the next time step internal collision migration process based on the first distribution function and the second distribution function; 4) determining the convergence of the lattice Boltzmann method, and if it is determined that theconvergence of the lattice Boltzmann method is not carried out, the steps 3-4 are repeated until the convergence calculation is terminated. Compared with the existing LBM model for calculating micro-scale flow, the present invention can process cases with complex structure boundary conditions while satisfying physical reality and accuracy, and the model is more concise and has smaller algorithm complexity and calculation amount.

Bias plays an important role in factor analysis and is often implicitly made use of, for example, to constrain solutions to factors that conform to physical reality. However, when components are collinear, a large range of solutions may exist that satisfy the basic constraints and fit the data equally well. In such cases, the introduction of mathematical bias through the application of constraints may select solutions that are less than optimal. The biased alternating least squares algorithm of the present invention can offset mathematical bias introduced by constraints in the standard alternating least squares analysis to achieve factor solutions that are most consistent with physical reality. In addition, these methods can be used to explicitly exploit bias to provide alternative views and provide additional insights into spectral data sets.

A method and apparatus for detecting vehicle headlights and a region-of-interest (ROI) segmenting method and apparatus are disclosed. The ROI segmenting method includes: performing an edge extracting operation on a captured image to obtain edges of the captured image; selecting edges meeting predetermined criteria from the obtained edges, the predetermined criteria being the similarity between the region surrounded by the selected edges and the pattern formed by a vehicle headlight in physical reality at a position of the selected edges; determining the region surrounded by the selected edges within the captured image as a vehicle headlight pattern; and segmenting the ROI which potentially includes the vehicle pattern from the captured image based on the determined vehicle headlight pattern. With such a method and apparatus, the ROI of a vehicle may be acquired from the image without using the vehicle's bottom shadow.

The invention provides a zero point error processing method for the wind tunnel test data of a symmetrical aircraft. The method comprises a step of selecting a basic flight attitude with symmetry as astandard state of a zero point of the wind tunnel test data, a step of determining aerodynamic force resultant force in a cross section of the aircraft and a direction and a size of a resultant moment when a synthetic attack angle is zero, a step of decomposing the resultant force in the cross section of the aircraft and the resultant moment under a rotating body shaft system to obtain new valuesof corresponding force and moment, a step of obtaining new values of axial force and rolling moment zero point through algebraic averaging, a step of obtaining a difference between old and new values, a step of adding the above difference to old data changing with the synthetic attack angle to obtain new data and realizing the overall translation of a curve for matching use. According to the method, starting from the physical reality that a zero point state is the same one, an idea of zero point force and torque normalization is provided, the zero point error processing method for the windtunnel test data of the symmetrical aircraft is established, the installation error of a wind tunnel test model and a wind tunnel flow field uniformity error can be comprehensively considered, the precision of wind tunnel test data is improved, and the problem of the interference of a zero point error is solved for guidance, control and the flight simulation and characteristic evaluation of an autopilot.

The invention provides a collision probability calculation method based on a cube model. The method comprises the following steps that: dividing a terrestrial space into cubic grids, and numbering the cube; calculating the position of a space object and the number of the cube where the space object is positioned; carrying out pairing on the space object, and taking the space object in an adjacent and same cube as a pairing target; and calculating a collision probability between targets. By use of the method, consideration for a collision possibility for the adjacent cube space objects is increased to make up a defect that an original cube model can miss a collision situation, an improved cube model more conforms to physical reality, and an analysis result is more reasonable and credible.

In one embodiment, a new device or service can be treated as an abstraction, allowing a model to be created which mimics operation of the device or service, but which does not physically exist. A communication system may then take physical assets that are distributed around a network, such as circuit packs with ports on them, and virtually plug them into a shelf that does not physically exist. A legacy system preferably continues to function as it always has and the abstraction mediates between the legacy operations support systems, the virtual machine and the physical reality. This then allows for the continued use of existing operation systems to manage new network architectures with services different from those originally contemplated by the legacy operations support systems.